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Aerobic and resistance exercise training associated with cholinergic stimulation by pyridostigmine bromide previously to myocardial infarction in rats: role on cardiac and autonomic function, and in inflammatory profile

Grant number: 14/06669-2
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): July 01, 2014
Effective date (End): June 30, 2017
Field of knowledge:Health Sciences - Physical Education
Cooperation agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal researcher:Érico Chagas Caperuto
Grantee:Catarina de Andrade Barboza
Home Institution: Faculdade de Ciências Biológicas e da Saúde. Universidade São Judas Tadeu (USJT). São Paulo , SP, Brazil

Abstract

Impairment of autonomic nervous system has been associated with an increased inflammatory status and, together with ventricular dysfunction, leads to high rates of mortality in patients after myocardial infarction (MI). Cardiovascular, immune and autonomic benefits of aerobic exercise training (ET) and, more recently, resistance training, have led many researchers to suggest the ET as an important non-pharmacological tool in the MI treatment and prevention. On the other hand, the administration of pyridostigmine bromide (PYR), a cholinergic agonist, has demonstrated positive effects on autonomic function in healthy subjects, coronary patients (in response to exercise), as well as in infarcted animals. In this sense, the questions that arise are: the association of aerobic ET and PYR may trigger additional positive effects on autonomic function and, consequently, in the inflammatory response to MI? The resistance ET, performed alone before the IM, is a practice that induces a cardioprotective phenotype? The association of resistance ET and PYR can trigger additional positive effects on autonomic function and, consequently, in the inflammatory response to MI? Thus, the aim of this study is to evaluate the ventricular, hemodynamic, autonomic, and inflammatory responses of myocardial ischemia in rats previously submitted to aerobic or resistance ET, associated with pyridostigmine bromide treatment. The animals should be subjected to 60 days of aerobic or resistance ET and, at the end of the protocol, myocardial ischemia will be induced by coronary artery ligation. After MI, ventricular function, autonomic and inflammatory profile evaluations will be performed. Results will be presented as mean ± standard error of the mean and ANOVA statistical analyses tests will be properly applied. P<0.05 will be considered significant. The present study may have a significant clinical impact, clarifying mechanisms for preventing and/or mitigating the adverse effects of an ischemic event. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
BARBOZA, C. A.; FUKUSHIMA, A. R.; CARROZZI, N.; MACHI, J. F.; DOURADO, P. M. M.; MOSTARDA, C. T.; IRIGOYEN, M. C.; NATHANSON, L.; MORRIS, M.; CAPERUTO, E. C.; RODRIGUES, B. Cholinergic Stimulation by Pyridostigmine Bromide Before Myocardial Infarction Prevent Cardiac and Autonomic Dysfunction. SCIENTIFIC REPORTS, v. 9, FEB 21 2019. Web of Science Citations: 1.
BARBOZA, C. A.; SOUZA, G. I. H.; OLIVEIRA, J. C. M. F.; SILVA, L. M.; MOSTARDA, C. T.; DOURADO, P. M. M.; OYAMA, L. M.; LIRA, F. S.; IRIGOYEN, M. C.; RODRIGUES, B. Cardioprotective Properties of Aerobic and Resistance Training Against Myocardial Infarction. INTERNATIONAL JOURNAL OF SPORTS MEDICINE, v. 37, n. 6, p. 421-430, JUN 2016. Web of Science Citations: 5.

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